2 0 0 0 OA 没入型3次元映像呈示におけるテニス打球に対する知覚
- 著者
- 井田 博史 福原 和伸 高橋 まどか 石井 源信 井上 哲理
- 出版者
- Japanese Society of Sport Psychology
- 雑誌
- スポーツ心理学研究 (ISSN:03887014)
- 巻号頁・発行日
- vol.37, no.1, pp.1-11, 2010 (Released:2010-04-15)
- 参考文献数
- 26
- 被引用文献数
- 3 2
The Cave Automatic Virtual Environment (CAVE), which is a computer-simulated 3D virtual reality (VR) system, is expected to provide sport learners with interactive and immersive learning materials. The purpose of this study was to reveal perceptual characteristics of tennis players when they viewed the tennis ball flight reconstructed in CAVE. The visual stimuli of this study were reconstructed based on the actual measured values of the tennis court and the ball flight. Perceptual performances, subjective impression scoring and shot type discrimination (flat, topspin and slice), were assessed by varying the conditions of three visual VR settings: binocular disparity, screen number, and viewpoint. The augmented-disparity setting was likely to induce a higher sense of discomfort than the no-disparity and normal-disparity settings. The four-screen condition was more likely to induce a correct response than the one-screen condition. The viewpoint of the umpire induced a significantly higher sense of discomfort than the field player viewpoints, and the viewpoint close to the approaching ball made it more difficult to discriminate the shot type. This research was a pilot study on sport perception in VR, and the results will contribute to the construction of sport-simulating VR systems.
1 0 0 0 OA 膝前十字靱帯損傷メカニズムの三次元的解明と予防法の構築
膝前十字靱帯損傷のメカニズム解明, およびその予防法の構築を行った. メカニズムの解明においては, Point Cluster法を用いた三次元動作解析法により着地動作や切り返し動作を計測し, こうした動作時の脛骨の内旋および膝外反の強制が,そのメカニズムに関連していると考えられた.予防法については,バスケットボール,サッカー,スキー,テニスの各競技において外傷予防プログラムを作成し,各団体において普及,推進を行った.また,その効果検証を行った.